Multi-purpose brush



FIG. 1 is a perspective view of a multi-purpose brush showing my new design, with the broken lines showing a handle being for illustrative purposes only and forming no part of the claimed design.

FIG. 2 is a side elevational view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a multi-purpose brush, as shown and described. 